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TECH PUBLIC SPX3819M5-L-1-8 SPX3819M5
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TECH PUBLIC SPX3819M5-L-1-8
- Type
- TECH PUBLIC
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 500mV@(100mA)
- Electronic Component
- TECH PUBLIC
- Electronic Component
- SPX3819M5-L-1-8
- Electronic Component
- 1
- Package
- SOT-23-5
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.036g
- Electronic Component
- 1
- Electronic Component
- BM0226539060
- Operating Temperature
- 40℃~+125℃@(Tj)
- Operating Voltage
- 20V
- Output
- Electronic Component
- Output Voltage
- 1.8V
- Output Current
- 500mA
- Output Type
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SPX3819M5-L-1-8 产品概述
一、概述
SPX3819M5-L-1-8 是台舟电子（TECH PUBLIC）面向便携与嵌入式应用的低压差线性稳压器（LDO），提供固定 1.8V 输出并集成使能功能、过流保护和过热保护。器件采用 SOT-23-5 小封装，适用于空间和成本受限的电源设计场景。
二、主要规格
- 输出电压：1.8V（固定）
- 最大输出电流：500mA
- 工作电压（Vin 最大）：20V
- 压差（Dropout）：500mV @ 100mA
- 静态电流（Iq）：5μA（轻载下的静态待机电流）
- PSRR：70dB @ 1kHz
- 工作温度范围：-40℃ ~ +125℃（Tj）
- 保护功能：过流保护、过热关断
- 封装：SOT-23-5，单通道
三、关键特性与优势
- 低静态电流：5μA 的低静态电流使其非常适合对待机能耗敏感的电池供电系统。
- 良好抑制纹波能力：在 1kHz 时 PSRR 达 70dB，能有效抑制上游开关噪声，改善数字与模拟电路的电源质量。
- 中等功率能力：最高 500mA 输出满足多数 MCU、传感器、射频前端及外设供电需求。
- 完整的保护机制：内置过流与过热保护，提升系统可靠性并简化外部保护电路设计。
四、典型应用
- 电池供电的便携设备、手持终端
- 单片机与传感器供电轨（1.8V 系统）
- 通信与射频电路的模拟前端电源
- 工业与消费类产品中需要低噪声、低漏电的稳压场合
五、封装与引脚建议
SOT-23-5 小尺寸封装便于自动贴装。常规设计中，建议在输入端并联一个低 ESR 的陶瓷电容（例如 1μF10μF）以稳定输入电源，输出端同样使用 1μF10μF 陶瓷电容以保证环路稳定和瞬态响应。使能（EN）引脚可直接由 MCU 或系统逻辑控制，用以实现电源管理与节能。
六、设计与布局注意事项
- 电容布局：输入/输出电容应尽量靠近器件引脚布置，减小走线电感和噪声耦合。
- 热管理：尽管封装小巧，持续高电流下器件会产生热量，PCB 应提供较大铜箔散热区域或采用多层过孔散热。
- 启动与滤波：若上游为开关电源，应注意启动顺序和滤波网络，结合 PSRR 特性优化整体噪声性能。
- 参考数据手册：使能电平阈值、环路稳定性对电容等的具体要求请参考厂商数据手册与典型应用电路。
SPX3819M5-L-1-8 提供在低功耗与噪声控制之间的良好折衷，适用于需要稳定 1.8V 电源且对尺寸和能耗有严格要求的系统。若需器件的详细电气特性曲线和典型应用电路，请索取 TECH PUBLIC 的完整规格书。
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